I have these running in a bedroom off a Yamaha stereo receiver. I'm pretty close to them and don't blast the volume so the amp works fine in this application. However, in Erin's review, he says don't use an AVR (implying you need a separate power amp). Has anyone run these in a home theater setup using just an AVR with no external amp? How has that worked? And if it was fine, why was an AVR not recommended by Erin? FWIW, I plan on using them with a Denon X3400 but if these prove too hard to drive, I might forgo the plan to base a HT system around them.